man: add missing bshell.1 symlink
The bshell binary is missing a symlink to its manual page. It should be
symlinked to the man page for bssh, just like how the bvnc man page is.
Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=655190

don't use 'also=' in dnsconfd systemd unit
'Also=avahi-daemon.socket' means that 'systemctl disable avahi-dnsconfd'
will also disable avahi-daemon.socket, which is definitely not what we
want, and it also causes debhelper to throw an error. Just drop this entry
from the configuration.
Last-Modified: 2018-01-02 20:30:00 -0800
Bug-Debian: https://bugs.debian.org/878911

remove empty avahi_discover python module
The avahi-discover tool no longer has any code outside its main
executable, so it does not need to install library modules. Its only
library code was avahi_discover.SimpleGladeApp, which was removed
in 2009.
Signed-off-by: Simon McVittie <smcv@debian.org>